National Geographic : 1984 Feb
50 MM (2 IN, ABOVE);75 MM (BELOW LEFT); 50 MM (BELOW RIGHT);ALLBY EDWARDS. ROSS act. The hoodlike appendageof a Costa Rican mantis (Choeradodisrhombicollis, below left) enhances its resemblance to green leaves. The dead-leafmantis of Peru (genus Acanthops, below) even sways back and forth, simulatingwind-tossed foliage. Several species avoid dangerthroughtheir resemblance to other insects that are distastefulto predatorssuch as birds and monkeys.